/**************************************************************************************************
* Program Name: Programming Project 4.6: Multiplication Table
* Author: Terry Weiss
* Date Written: September 25, 2015
* Course/Section: CSC 111-003W
* Program Description:
* Design and implement an application that produces a multiplication table, showing the
* results of multiplying the integers 1 through a user-defined maximum by themselves.
**************************************************************************************************/
import java.util.Scanner;
public class MultTable
{
public static void main( String[] args )
{
final int MIN_FACTOR = 1, MAX_FACTOR = 20;
String number;
int highestFactor, row, column;
Scanner user_input = new Scanner(System.in);
do
{
System.out.print("Please enter how high you'd like to multiply (up to 20): ");
number = user_input.next();
try {
highestFactor = Integer.parseInt(number);
} catch (NumberFormatException e) {
System.out.print("That's not a number! ");
highestFactor = -1;
}
} while (highestFactor < MIN_FACTOR || highestFactor > MAX_FACTOR);
// Print the header row
System.out.print(" x\t");
for (column = 1; column <= highestFactor; column++)
{
System.out.format("%3d\t", column);
}
System.out.print("\n");
// Print table
for (row = 1; row <= highestFactor; row++ )
{
System.out.format("%2d|\t", row); // Display row number
for (column = 1; column <= highestFactor; column++)
{
System.out.format("%3d\t", (row * column));
}
System.out.print("\n");
}
}
}
/*
Please enter how high you'd like to multiply (up to 20): 12
x 1 2 3 4 5 6 7 8 9 10 11 12
1| 1 2 3 4 5 6 7 8 9 10 11 12
2| 2 4 6 8 10 12 14 16 18 20 22 24
3| 3 6 9 12 15 18 21 24 27 30 33 36
4| 4 8 12 16 20 24 28 32 36 40 44 48
5| 5 10 15 20 25 30 35 40 45 50 55 60
6| 6 12 18 24 30 36 42 48 54 60 66 72
7| 7 14 21 28 35 42 49 56 63 70 77 84
8| 8 16 24 32 40 48 56 64 72 80 88 96
9| 9 18 27 36 45 54 63 72 81 90 99 108
10| 10 20 30 40 50 60 70 80 90 100 110 120
11| 11 22 33 44 55 66 77 88 99 110 121 132
12| 12 24 36 48 60 72 84 96 108 120 132 144
*/
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